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type: MusicGroup
genre: classical
popularity: 34
followers: 501
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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album: C.P.E. Bach: Piano Concertos
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  date published: 2022-09-02
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    by artist: Berliner Barock Solisten
    by artist: Michael Rische
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      date published: 2022-09-02
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62203901
    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dac85818549399fac01377e225249c0792a4b83596505c1f3a210fa6090fbc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62203901.
      date published: 2026-07-31T00:26:26Z
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  track: Concerto in C Minor, Wq. 5: II. Arioso
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    by artist: Berliner Barock Solisten
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      type: MusicAlbum
      date published: 2022-09-02
    popularity: 3
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      date published: 2026-07-31T12:24:41Z
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  track: Concerto in C Minor, Wq. 5: III. Allegro spirituoso
  track: Concerto in A Major, Wq. 8: I. Allegro
  track: Concerto in A Major, Wq. 8: II. Andante
  track: Concerto in A Major, Wq. 8: III. Allegro
  track: Concerto in B Minor, Wq. 30: I. Allegro di molto
  track: Concerto in B Minor, Wq. 30: III. Allegro
track: Keyboard Concerto in A Minor, Wq. 1, H. 403: I. Allegro (Cadenza by M. Rische)
track: Keyboard Concerto in A Minor, Wq. 1, H. 403: II. Andante (Cadenza by M. Rische)
track: Keyboard Concerto in A Minor, Wq. 1, H. 403: III. Allegro assai
track: Keyboard Concerto in D Major, Wq. 45, H. 478: I. Allegretto
track: Keyboard Concerto in D Major, Wq. 45, H. 478: II. Andantino
track: Keyboard Concerto in D Major, Wq. 45, H. 478: III. Allegro
track: Keyboard Concerto in E Minor, Wq. 15, H. 418: I. Allegro
track: Keyboard Concerto in E Minor, Wq. 15, H. 418: II. Adagio
track: Keyboard Concerto in E Minor, Wq. 15, H. 418: III. Vivace

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Valence (Positivity)
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Concerto in C Minor, Wq. 5: III. Allegro spirituoso
type: MusicRecording
duration: PT4M54S
duration ms: 294746
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Berliner Barock Solisten
by artist: Michael Rische
in album: C.P.E. Bach: Piano Concertos
  type: MusicAlbum
  date published: 2022-09-02
popularity: 3
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354511b170eb2fc6511c0f23c6f5e9e06dfb8368901fdc48a9dfa8f539426a48. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62203903.
  date published: 2026-07-08T03:20:19Z
audio: Concerto in C Minor, Wq. 5: III. Allegro spirituoso
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Concerto in A Major, Wq. 8: I. Allegro
type: MusicRecording
duration: PT5M41S
duration ms: 341453
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Berliner Barock Solisten
by artist: Michael Rische
in album: C.P.E. Bach: Piano Concertos
  type: MusicAlbum
  date published: 2022-09-02
popularity: 3
isrc code: DEAD62203904
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
audio: Concerto in A Major, Wq. 8: I. Allegro
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Concerto in A Major, Wq. 8: II. Andante
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duration: PT7M54S
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by artist: Berliner Barock Solisten
by artist: Michael Rische
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popularity: 3
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
audio: Concerto in A Major, Wq. 8: II. Andante
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Concerto in A Major, Wq. 8: III. Allegro
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duration: PT5M27S
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by artist: Carl Philipp Emanuel Bach
by artist: Berliner Barock Solisten
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popularity: 2
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505a7042111fbe8bc4c74931fb0fc36cae27316ab77f39b083245c09e23b8181. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62203906.
  date published: 2026-07-08T03:20:19Z
audio: Concerto in A Major, Wq. 8: III. Allegro
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Concerto in B Minor, Wq. 30: I. Allegro di molto
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duration: PT9M51S
duration ms: 591746
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Berliner Barock Solisten
by artist: Michael Rische
in album: C.P.E. Bach: Piano Concertos
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popularity: 3
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9d6de70ffe4a947a0329737b4ce730ab63500f0efb6aa2bc6394590577a5a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62203907.
  date published: 2026-07-31T12:24:41Z
audio: Concerto in B Minor, Wq. 30: I. Allegro di molto
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Concerto in B Minor, Wq. 30: III. Allegro
type: MusicRecording
duration: PT7M39S
duration ms: 459160
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Berliner Barock Solisten
by artist: Michael Rische
in album: C.P.E. Bach: Piano Concertos
  type: MusicAlbum
  date published: 2022-09-02
popularity: 2
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a519cf250bc78a597468fb13b8490b4802b443a448814acce15d7b31dad813. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD62203909.
  date published: 2026-07-31T13:04:34Z
audio: Concerto in B Minor, Wq. 30: III. Allegro
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Keyboard Concerto in A Minor, Wq. 1, H. 403: I. Allegro (Cadenza by M. Rische)
type: MusicRecording
duration: PT5M53S
duration ms: 353226
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
  type: MusicAlbum
  date published: 2018-04-20
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additional property: CopyrightID
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1797061394cf29552ecbce9652bacd904f09da50bd860b577e648a0473cf5ef8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61703401.
  date published: 2026-07-08T03:20:19Z
audio: Keyboard Concerto in A Minor, Wq. 1, H. 403: I. Allegro (Cadenza by M. Rische)
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Keyboard Concerto in A Minor, Wq. 1, H. 403: II. Andante (Cadenza by M. Rische)
type: MusicRecording
duration: PT6M31S
duration ms: 391826
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
  type: MusicAlbum
  date published: 2018-04-20
isrc code: DEAD61703402
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Keyboard Concerto in A Minor, Wq. 1, H. 403: II. Andante (Cadenza by M. Rische)
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Keyboard Concerto in A Minor, Wq. 1, H. 403: III. Allegro assai
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duration: PT4M15S
duration ms: 255626
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
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isrc code: DEAD61703403
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-31T04:14:58Z
audio: Keyboard Concerto in A Minor, Wq. 1, H. 403: III. Allegro assai
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Keyboard Concerto in D Major, Wq. 45, H. 478: I. Allegretto
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duration: PT6M15S
duration ms: 375506
explicit: false
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by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
audio: Keyboard Concerto in D Major, Wq. 45, H. 478: I. Allegretto
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Keyboard Concerto in D Major, Wq. 45, H. 478: II. Andantino
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duration: PT5M6S
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by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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Keyboard Concerto in D Major, Wq. 45, H. 478: III. Allegro
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by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826b6a9fd5ec62101558c2bc909c2977d818128bb6418078784776261734eaea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61703406.
  date published: 2026-07-08T03:20:19Z
audio: Keyboard Concerto in D Major, Wq. 45, H. 478: III. Allegro
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Keyboard Concerto in E Minor, Wq. 15, H. 418: I. Allegro
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by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
  type: MusicAlbum
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T17:23:26Z
audio: Keyboard Concerto in E Minor, Wq. 15, H. 418: I. Allegro
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Keyboard Concerto in E Minor, Wq. 15, H. 418: II. Adagio
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by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
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isrc code: DEAD61703408
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: Keyboard Concerto in E Minor, Wq. 15, H. 418: II. Adagio
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Keyboard Concerto in E Minor, Wq. 15, H. 418: III. Vivace
type: MusicRecording
duration: PT7M39S
duration ms: 459680
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Michael Rische
by artist: Berliner Barock Solisten
in album: C.P.E. Bach: Piano Concertos, Vol. 5
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938fc1b2ab5864762ac494d4fafd5d0caa24d54ea9847c5a7288b792eeca2e2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61703409.
  date published: 2026-07-31T08:26:41Z
audio: Keyboard Concerto in E Minor, Wq. 15, H. 418: III. Vivace
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